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London, (ANI): Slumdog Millionaire director Danny Boyle is planning to make a film based on the true story of an American climber who hacked off part of his arm with a knife after it became trapped under a rock, it has emerged. According to Daily Variety, the Oscar winner will direct 127 Hours based on mountaineer Aron Ralston''s ordeal in Utah''s Blue John Canyon in 2003.

Ralston used a blunt knife and pliers to amputate his right forearm after it was pinned between a boulder and the canyon wall for nearly five days, reports The Mirror. The mountaineer documented his experience in a book entitled Between a Rock and a Hard Place. He has also appeared on US talk shows and is now a corporate speaker. The production of the film is due to begin in 2010 and is expected to release late next year.